304/316L SS Conductive Spacers 15.8×0.5mm ATOMFAIR®

Price range: $122.00 through $210.00

Institutional Procurement & Supply Compliance: As a verified US supplier, Atomfair accepts formal institutional Purchase Orders (POs), contract billing schedules, and custom procurement loops for university and national laboratories, and corporate R&D departments globally.

ASTM A240 304/316L stainless steel conductive spacers for CR2032 cells, 15.8×0.5 mm with ±0.02 mm tolerance, flat, 1000 pcs/pack. Order now.

SKU: AFMSOWLP963
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ATOMFAIR 304/316L STAINLESS STEEL CONDUCTIVE SPACERS 15.8×0.5MM

RESEARCH GRADE MATERIAL

Product Overview

ATOMFAIR® 304/316L Stainless Steel Conductive Spacers 15.8×0.5mm is a coin cell spacer for battery research and laboratory procurement. Key specifications include Product Name: ATOMFAIR® 304/316L Stainless Steel Conductive Spacers; Material Options: 304 Stainless Steel/316L Stainless Steel (Compliant with ASTM A240); Dimensions (Diameter × Thickness): 15.8 × 0.5 mm (Default); Model Compatibility: CR2032 (Compatible with all CR20 Series Internal Dimensions); Packaging Specification: 1000 Pieces/Pack. It is organized for Lab Accessories & Consumables workflows.

ATOMFAIR® 304/316L Stainless Steel Conductive Spacers

ITEM DESCRIPTION
Product Name ATOMFAIR® 304/316L Stainless Steel Conductive Spacers
Material Options 304 Stainless Steel / 316L Stainless Steel (Compliant with ASTM A240)
Dimensions (Diameter × Thickness) 15.8 × 0.5 mm (Default)
Model Compatibility CR2032 (Compatible with all CR20 Series Internal Dimensions)
Packaging Specification 1000 Pieces/Pack
Core Performance Parameters Dimensional Tolerance ±0.02 mm
High Mechanical Strength
Superior Flatness for Uniform Current Distribution
304: General Corrosion Resistant
316L: Sulfide/Chloride Ion Corrosion Resistant, High Temperature Resistant
Optimal Application Scenarios 304: Most routine testing, aqueous batteries, low-to-medium voltage systems
316L: Sulfide solid-state batteries, high-voltage batteries, highly corrosive systems, long-term cycling tests
Customization Options For other sizes, models, and materials, please email to request customization.

Research-Grade Core Quality Advantages

  • Uniform High-Precision Tolerance Control: All component dimensions strictly controlled within ±0.02 mm, ensuring perfect matching across different batches and components, completely eliminating assembly gaps and uneven pressure issues caused by dimensional errors.
  • Full Material Gradient Coverage: Provides a complete material selection from basic to high-end, allowing flexible selection based on corrosivity, voltage range, and testing precision requirements of your experimental system, avoiding experimental failure due to mismatched consumables.
  • Rigorous Electrochemical Compatibility Verification: All materials have undergone constant potential polarization, cyclic voltammetry, and other electrochemical tests to ensure no side reactions within a -0.5 V to 5.0 V voltage range, guaranteeing no interference with battery performance test results.
  • Standardized Batch Production: Fully automated production and quality control ensures highly consistent product performance within and across batches, effectively reducing experimental systematic errors.

APPLICATION SCOPE: Precision assembly and standardized testing for most routine electrochemical testing scenarios, aqueous batteries, low-to-medium voltage systems, sulfide solid-state batteries, high-voltage batteries, highly corrosive systems, and long-term cycling tests requiring uniform current distribution.
PACKAGING: 1000 pieces/pack. 100% dimensional inspection, flatness verification, surface quality inspection, and appearance inspection before shipment, ensuring oil-free, burr-free, and impurity-free conditions. Can be used directly for battery assembly inside gloveboxes.
IMPORTANT NOTICE: This series is a one-stop assembly solution for coin cells dedicated to electrochemical research. Default accompanying accessories are made of 304 stainless steel. If other materials or special dimensions are required, please email for customization.



This series is a one-stop assembly solution for coin cells dedicated to electrochemical research, comprehensively covering the three mainstream models CR2032, CR2025, and CR2016. It provides a full material and specification selection of three core components—positive/negative electrode cases, conductive spacers, and elastic springs. Independent purchase of single components is supported, and pre-matched complete assembly kits are also available. Fully compatible with all cutting-edge research systems, including conventional lithium-ion batteries, sodium-ion batteries, all-solid-state batteries, lithium-air batteries, and high-voltage batteries, it provides standardized hardware support for the accuracy and reproducibility of experimental data.
Important Note: Default accompanying accessories are made of 304 stainless steel. For accessories made of other materials, please email for customization.

I. Positive/Negative Electrode Cases

Type Classification Material / Special Structure Compatible Models Core Performance Parameters Optimal Application Scenarios
Basic Universal 304 Stainless Steel CR2032/CR2025/CR2016 Dimensional Tolerance ±0.02 mm
Sealing Pressure ≥5 MPa
Operating Temp. -40°C to 120°C
Conventional Li-ion/Na-ion batteries, aqueous battery basic testing, batch prototype preparation
Basic Universal 316L Stainless Steel CR2032/CR2025/CR2016 Dimensional Tolerance ±0.02 mm
Sealing Pressure ≥6 MPa
Operating Temp. -40°C to 150°C
Sulfide solid-state batteries, high-voltage batteries (>4.5 V), long-term cycling tests, highly corrosive systems
High-Performance Coated Aluminum Coated CR2032/CR2025/CR2016 Coating Thickness 5–10 μm
Adhesion ≥5B Grade
Volume Resistivity ≤3×10⁻⁸ Ω·m
Lightweight batteries, low contact resistance precision testing, systems sensitive to metal ion contamination
High-Performance Coated Titanium Coated CR2032/CR2025/CR2016 Coating Thickness 3–8 μm
Excellent Biocompatibility
Resistant to Strong Acid/Base Corrosion
Bio-batteries, aqueous zinc batteries, strongly acidic/alkaline electrolyte systems
High-Performance Coated Nickel Coated CR2032/CR2025/CR2016 Coating Thickness 5–12 μm
Excellent Weldability
Atmospheric Corrosion Resistant
Battery structures requiring tab welding, pilot-scale batch production, routine electrochemical testing
High-Performance Coated Gold Coated CR2032/CR2025/CR2016 Coating Thickness 0.5–2 μm
Contact Resistance ≤1 mΩ
Superior Chemical Stability
Ultra-precision electrochemical testing, EIS testing, micro-current testing, in-situ characterization
Specialized Research Li-Air Mesh Type CR2032/CR2025/CR2016 Pore Size 0.2–0.5 μm
Waterproof Rating IP67
Uniform Gas Distribution Design
Lithium-air batteries, lithium-oxygen batteries, gas-involved reaction battery systems
Specialized Research polyimide Window Type CR2032/CR2025/CR2016 Window Thickness 25–50 μm
Optical Transmittance ≥85%
Electrolyte Corrosion Resistant
In-situ optical characterization, in-situ Raman/IR spectroscopy, in-situ microscopy observation

II. Conductive Spacers

Default Size: Φ15.8 × 0.5 mm, compatible with the internal dimensions of all CR20 series cell cases. Other thicknesses and special sizes are customizable; please email for customization.
Material Available Size (Diameter × Thickness) Core Performance Parameters Optimal Application Scenarios
99.5% Industrial Pure Aluminum Φ15.8 × 0.5 mm (Default) Dimensional Tolerance ±0.02 mm
Volume Resistivity 2.7×10⁻⁸ Ω·m
No Electrochemical Side Reactions
Precision experiments requiring high contact resistance, conventional Li-ion/Na-ion batteries
304 Stainless Steel Φ15.8 × 0.5 mm (Default) Dimensional Tolerance ±0.02 mm
High Mechanical Strength
General Corrosion Resistant
Most routine testing scenarios, aqueous batteries, low-to-medium voltage systems
316L Stainless Steel Φ15.8 × 0.5 mm (Default) Dimensional Tolerance ±0.02 mm
Sulfide/Chloride Ion Corrosion Resistant
High Temperature Resistant
Sulfide solid-state batteries, high-voltage batteries, highly corrosive systems, long-term cycling tests

III. Elastic Springs

Default Size: φ15.4 × 0.3 mm, compatible with the internal dimensions of all CR20 series cell cases. Other heights and special sizes are customizable; please email for customization.
Spring Type Available Materials Available Size (Diameter × Free Height) Core Performance Parameters Optimal Application Scenarios
Wave Spring (Belleville) Al Coated / 304 SS / 316L SS / Au Coated SS φ15.4 × 1.1 mm (Default) Spring Force Range 5 N–30 N
Large Contact Area
Small Footprint
Fatigue Life ≥10,000 cycles
Most routine testing, thin electrodes, low-loading batteries; universal preferred choice
Conical Spring Al Coated / 304 SS / 316L SS / Au Coated SS φ15.4 × 1.1 mm (Default) Spring Force Range 10 N–50 N
Good Self-Centering
Strong Anti-Buckling
Fatigue Life ≥10,000 cycles
Thick electrodes, high-loading batteries, vibration environment testing, systems requiring precise pressure control

IV. Complete Assembly Kit Specifications

Kit Type Included Components Corresponding Battery Model Configurable Options
Standard Assembly Kit Positive Case + Negative Case + Spacer + Spring CR2032/CR2025/CR2016 All materials freely combinable
Spacer thickness customizable
Spring height customizable
Li-Air Dedicated Kit Mesh Positive Case + Negative Case + Waterproof Breathable Membrane + Spacer + Spring CR2032/CR2025/CR2016 304/316L SS material optional
Spacer thickness customizable
Spring height customizable
In-Situ Characterization Kit polyimide Window Cell Case + Gold Coated Spacer + Gold Coated Spring CR2032/CR2025/CR2016 Window thickness optional
Spacer thickness customizable
Spring height customizable

International Quality Standards

  • Stainless steel materials comply with ASTM A240 international standard.
  • Pure aluminum materials comply with ASTM B209 international standard.
  • All coating thicknesses are uniform, with adhesion meeting ASTM B571 standard.
  • 100% dimensional inspection, sealing performance testing, and appearance inspection before shipment.
  • Oil-free, burr-free, and impurity-free; ready for direct use in glovebox battery assembly.
TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: INQUIRY@ATOMFAIR.COM
Manufacturer: Atomfair LLC
Brand: ATOMFAIR®

This spacer is validated for CR20 series coin cells under specific electrochemical conditions. Material selection must match the electrolyte and voltage window to avoid corrosion or side reactions.

  • Voltage Window Constraint: Operate only between -0.5V and 5.0V to maintain electrochemical inertness and prevent side reactions.
  • Material Selection Guideline: Choose 304 for routine or aqueous systems; select 316L for sulfide, chloride, or high-voltage environments.
  • Dimensional Tolerance Requirement: Maintain ±0.02mm dimensional tolerance to ensure uniform current distribution and consistent stack pressure.
  • Cleanliness and Inspection: Verify the spacer is oil-free, burr-free, and impurity-free before introducing it into the glovebox assembly area.

Proper spacer selection and placement ensure consistent pressure and current distribution in coin cell batteries. Follow these steps to integrate the spacer into a CR2032 assembly.

Required Equipment: Inert atmosphere glovebox

  1. Select Material Grade
    Select the appropriate stainless steel grade (304 or 316L) based on electrolyte corrosivity and operating voltage.
  2. Inspect Spacer
    Inspect the spacer for visual defects, burrs, or contamination before use.
  3. Transfer to Glovebox
    Transfer the spacer into an inert atmosphere glovebox for battery assembly.
  4. Position in Cell Case
    Position the spacer centrally within the CR2032 cell case to ensure uniform current distribution.

What are the key performance trade-offs between 304 and 316L stainless steel conductive spacers for battery research?

The 304 stainless steel spacer offers general corrosion resistance and is suitable for most routine testing, aqueous batteries, and low-to-medium voltage systems. The 316L stainless steel variant provides superior resistance to sulfide and chloride ion corrosion along with higher temperature tolerance, making it optimal for sulfide solid-state batteries, high-voltage batteries, highly corrosive systems, and long-term cycling tests. Both maintain dimensional tolerance of ±0.02 mm and comply with ASTM A240.

Are the ATOMFAIR 304/316L stainless steel conductive spacers compatible with CR2025 and CR2016 coin cell models?

Yes, the spacers are specified as compatible with all CR20 series internal dimensions, including CR2025 and CR2016. The default dimensions of 15.8 mm diameter and 0.5 mm thickness match the internal geometry of these coin cell cases. For other sizes or models, customization is available upon request.

Can the ATOMFAIR stainless steel conductive spacers be used directly inside a glovebox without additional preparation?

Yes, the spacers undergo 100% dimensional inspection, flatness verification, surface quality inspection, and appearance inspection to ensure they are oil-free, burr-free, and impurity-free. They are designed to be used directly for battery assembly inside gloveboxes without any additional cleaning or preparation.

These 15.8×0.5 mm conductive spacers in 304 or 316L stainless steel provide precise dimensional control and material-specific corrosion resistance for coin cell assembly, but are only stocked in a single size and sold in packs of 1000, limiting flexibility for small-scale users.

Positive

  • High-precision dimensional tolerance: All spacers are manufactured with a dimensional tolerance of ±0.02 mm, ensuring consistent fit and uniform current distribution across multiple cell assemblies.
  • Corrosion-resistant material options: Offered in 304 and 316L stainless steel, with 316L providing enhanced resistance to sulfide and chloride ion corrosion, suitable for high-voltage and sulfide solid-state battery systems.

Trade-offs

  • Limited standard size availability: The spacers are only available in a single default size of 15.8×0.5 mm; any other thickness or diameter requires custom ordering via email, which may increase lead time.
  • Large minimum pack quantity: Each pack contains 1000 pieces, which may exceed the needs of small-scale or exploratory research groups and necessitate larger inventory storage.

Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.

To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.

Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).

Material

304SS, 316SS